<template>
    <div class="shopcar-container">
        <!-- 商品列表项区域 -->
       <div class="goods-list">
           <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<!-- 开关按钮 -->
                   <mt-switch v-model="$store.getters.getGoodsSelected[item.id]"
                   @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"
                   ></mt-switch>
                    <img :src="item.thumb_path" alt="">
                    <div class="info">
                       <h1>{{item.title}}</h1>
                       <p>
                           <span class="price">￥{{item.sell_price}}</span>
                           <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                           <!-- 问题:如何从购物车中获取商品的数量
1.我们可以先创建一个空对象,然后循环购物车中所有商品的数据,把 当前循环这条商品的Id,作为 对象 的 属性名,count值作为 对象的 属性值,这样,当把所有的商品循环一遍,就会得到一个对象:{88:2,89,1,90:4} -->
                           <a href="#" @click.prevent="remove(item.id,i)">删除</a>
                       </p>
                    </div>
					</div>
				</div>
			</div>

       </div>
            <!-- 结算区域 -->
       <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner jiesuan">
                        <div class="left">
                            <p>总计(不含运费)</p>
                            <p>已勾选商品<span class="red">{{$store.getters.getGoodsCountAndAmount.count}}</span>件,总价 ￥<span class="red">{{$store.getters.getGoodsCountAndAmount.amount}}</span></p>
                        </div>
                         <mt-button type="danger">去结算</mt-button>
					</div>
				</div>
			</div>

            <p>{{$store.getters.getGoodsSelected}}</p>

    </div>
</template>

<script>
import numbox from'../subcomponents/shopcar_numbox.vue'
export default {
    data() {
        return {
            goodslist:[]//购物车中所有商品的数据
        }
    },
    methods: {
        getGoodsList(){
            //1.获取到store中所有商品的id,拼接处一个用逗号分隔的字符串
            var idArr=[]
            this.$store.state.car.forEach(item => idArr.push(item.id));
            //如果购物车中没有商品,则直接返回,不需要请求数据接口,否则会报错
            if (idArr.length<=0) {
                return
            }
            //获取购物车商品列表
            this.$http.get('api/goods/getshopcarlist/'+idArr.join(",")).then(result=>{
                if (result.body.status===0) {
                    this.goodslist=result.body.message
                }
            })
        },
        remove(id,index){
            //点击删除,把商品从store中根据传递的id删除,同时,把当前组件中的goodslist中,对应要删除的那个商品,使用index来删除;
            this.goodslist.splice(index,1)//删除当前组件中的goodslist
            this.$store.commit('removeFormCar',id)
        },
        selectedChanged(id,val){
            //每当点击开关,把最新的 开关状态, 同步到 store 中
            // console.log(id+"---"+val)
            this.$store.commit('updateGoodsSelected',{id,selected:val})
        }

    },
    created() {
        this.getGoodsList()
    },
    components: {
        numbox
    }
}
</script>

<style lang='scss'scoped>
    .shopcar-container{
        background: #eee;
        overflow: hidden;
        .goods-list{
            .mui-card-content-inner{
                display: flex;
                align-items: center;
            }
            img{
                width: 3.75rem;
                height: 3.75rem;
             }
            h1{
             font-size: 0.8125rem;
             }
 
            .info{
                display: flex;
            flex-direction: column;
            justify-content: space-between;
                .price{
                    color: red;
                    font-weight: bold;
                }
            }
        }
        .jiesuan{
            display: flex;
            justify-content: space-between;
            align-items: center;
            .red{
                color: red;
                font-weight: bold;
                font-size: 16px;
            }
        }
    }
</style>